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6RP22 tube
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09-15-2018, 08:36 PM
N2IXK
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Properly called a 6R-P22, this is one of the Japanese "JIS" types that was used by Sears/Silvertone and others in the 1960s.
It doesn't have a direct EIA equivalent that I am aware of, as some of the JIS types do.
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